(;
GM[1]
SZ[19]
AW[dc][oc][qo]
AB[qd][pe][pq][cp]
TR[pe]
C[Problem 24. White to play.  

After Black has played the marked stone, what should White do ? ]
;W[qj]
TR[qo]

TE[2]
C[Correct Answer.  

White should extend along the right side with 1 to reinforce her marked stone and prevent it from being pincered. <= ]
)
)